Method read_string

Decode a `string` as described in [RFC4251 § 5]: > Arbitrary length binary string. Strings are allowed to contain > arbitrary binary data, including null characters and 8-bit > characters. They are stored as a uint32 containing its length > (number of bytes that follow) and zero (= empty string) or more > bytes that are the value of the string. Terminating null > characters are not used. > > S

(&mut self, buf: &'o mut [u8])